As a specialized jewelry manufacturer operating since 2014, we produce lab-grown-diamond for over 350 jewelry brands and retailers in 45+ countries. Our dedicated factory handles everything from CAD design and casting to stone setting, polishing, and final QC, with production volumes scaling from 30-piece small batches to 50,000+ piece quarterly runs. Manufacturing lab-grown-diamond at scale requires specialized tooling, trained moissanite setters who handle 500+ stones per day, and rigorous QC processes that catch defects before pieces leave our facility.
Lab-Grown-Diamond Styles Available
| Style | Details | Wholesale Price |
|---|---|---|
| LGD Rings | Engagement, wedding, fashion; HPHT/CVD stones | $80-$1200 |
| LGD Earrings | Studs, hoops, drops; IGI-certified stones | $45-$400/pair |
| LGD Necklaces | Pendants, tennis necklaces; 0.1-5ct stones | $55-$600 |
| LGD Bracelets | Tennis, bangles, chain; certified stones | $90-$800 |
| Loose LGD | HPHT/CVD, D-J color, VS-SI, various cuts | $50-$3000/stone |
Manufacturing Process
Our production follows a standardized workflow: CAD/mold preparation → wax injection → tree assembly → investment casting → devesting → assembly → pre-polish → stone setting → final polish → plating → 16-point QC → packaging. Every stage is documented with batch numbers for traceability. Our QC defect rate at outgoing inspection is under 1%.
Quality Control
Every piece goes through standardized QC: stone security pull test (500g), setting alignment, prong smoothness (nylon snag test), finish quality, hallmark verification, size check, and visual inspection under magnification and both warm/cool LED lighting. We include 0.5% spares on bulk orders to cover any rare post-shipping issues.
Product Specifications
- Stones: HPHT and CVD lab-grown diamonds, Type IIa available
- Grades: D-J color, IF-SI clarity, Excellent/Very Good cut
- Certifications: IGI (standard); GIA available at premium
- Sizes: 0.5mm melee to 12mm (6ct+) available
Pricing and MOQ
| Order Size | Pricing | Lead Time |
|---|---|---|
| Samples (1pc) | 1.5× wholesale | 5-15 days |
| Small batch (10-29) | 1.2× wholesale | 12-20 days |
| Production (30+) | Wholesale | 15-30 days |
| Private label (50+) | Wholesale + branding | 25-35 days |
Browse our full catalog: Loose LGD stones, lab diamond rings, LGD earrings, LGD necklaces, LGD bracelets, and LGD OEM services.
All manufacturing processes adhere to FTC Jewelry Guides for metal quality marking and disclosure of lab-created materials. Moissanite rates 9.25 on the Mohs scale, making it suitable for daily-wear jewelry. Production quality follows GIA gem quality standards with in-house gemologists grading every stone before setting.
Frequently Asked Questions
What is the difference between HPHT and CVD lab diamonds?
HPHT diamonds grow under high pressure high temperature mimicking natural formation; CVD diamonds grow from carbon gas in a vacuum chamber. Both are chemically, optically, and physically identical to natural diamonds.
Are lab-grown diamonds real diamonds?
Yes. Lab-grown diamonds are crystallized carbon with the same hardness (10 Mohs), refractive index (2.42), and chemical composition as natural diamonds. The FTC recognizes them as diamonds in 2018 guidance.
Are your lab diamonds certified?
Yes. IGI certificates are standard for our lab-grown diamond jewelry. GIA certificates are available at a premium for stones over 1ct.
How much cheaper are lab-grown vs natural diamonds?
Lab-grown diamonds typically cost 50-70% less than equivalent natural diamonds at wholesale, with larger savings on bigger stones.
Will lab-grown diamonds test as diamond on a diamond tester?
Yes. Lab-grown diamonds test positive as diamond on standard thermal conductivity testers (they conduct heat like natural diamond). Specialty testers can distinguish them.
Manufacturing lab-grown-diamond at scale requires specialized expertise, consistent quality, and reliable delivery. Our factory combines moissanite-specific production experience, ISO-aligned quality systems, and flexible MOQ tiers to serve jewelry brands at every stage of growth. Request a sample pack to evaluate quality firsthand, or contact our sales team to discuss your production needs.
